三维曲线顶管施工环境保护与控制技术研究

上海市西藏路电力隧道工程是目前国内难度最大的长距离、大口径复合曲线顶管工程，顶管穿越苏州河、复杂地下管线和建筑物密集地区，尤其是穿越地铁人行通道和运行中的地铁2号线，因此施工中对环境的保护至关重要。结合工程实际，将室内试验、数值模拟和现场监测等多种研究方法相结合，对三维曲线顶管施工中顶管的顶进精度、泥浆套、地表变形控制等关键技术进行了研究并对其应用效果进行了阐述，结果表明所采取的相关措施很好的保证了工程的顺利进行，并达到了对周围环境保护的要求。

Study on environmental protection and control techniques of 3-D curved pipe-jacking construction

The power tunnel of Tibet Road in Shanghai is the most difficult pipe-jacking project in China with long distance and large diameter. The tunnel cross through Suzhou River, underground pipelines and area of dense buildings, especially the underground passage of subway and the existing subway line 2, so it’s vital important to protect the surrounding environment when the pipe-jacking construction. Based on the construction of the tunnel, some key techniques are studied by laboratory test, numerical simulation and field measurement. The key techniques such as accuracy of pipe jacking, slurry sleeves and settlement control and their applications are described. The results indicate that the techniques can ensure the completion and achieve the demand of environmental protection.